【摘要】 进行了 4个大轴压比情况下方钢管混凝土轴心受压构件变形性能的试验研究。基于 ACI(1 992 )方法 ,提出一种适合于长期荷载作用下方钢管混凝土构件变形的分析模型和计算方法 ,理论结果和试验结果基本吻合。最后 ,分析了加载龄期和持荷时间、轴压比、含钢率、钢材强度和混凝土强度等因素对长期荷载作用下方钢管混凝土构件变形性能的影响规律更多还原

【Abstract】 The long term behavior of four concrete filled HSS columns under high load ratio is tested.An attempt to predict the time dependent behavior of concrete filled HSS columns by means of a model that is proposed by the ACI (1992) Specifications.A comparison of results calculated using this model shows good agreement with test results.Based on the theoretical model,the influence of the changing time immediately after loading,time under sustained loading,strength of the materials,load ratio and steel ratio on the long term effects is discussed.更多还原